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Yattayo
A to-do app that recreates a real 3D slider board: slide the switch, get it done.
Native Apple ecosystem: iPhone, Mac, Apple Watch, VisionFree tier with 3 tasksPremium lifetime $19.99No App Store ratings yetIndependent developer TsuzuKit
Opportunity score
38/100
A polished, emotionally differentiated niche to-do app, but difficult to turn into a highly profitable business due to saturated competition, weak moats and unknown traction.
Founder verdict
MAYBE
Yattayo is a beautifully simple, sensory to-do app, but its business potential is uncertain without niche focus, social proof or stronger retention hooks.
What is Yattayo?
Yattayo is an indie productivity app by Ryo Tsudukihashi/TsuzuKit that recreates a physical slider checklist board in 3D. Users write or type sticky notes and slide a knob to stamp OK when complete, with haptics, sound, interactive photo widgets, iCloud sync and gentle reminders. Monetization is freemium with a 3-task free tier and $0.99/week or $19.99 lifetime premium. Revenue, growth and ratings are not public. The app targets Apple users seeking a tactile, satisfying to-do ritual rather than a feature-heavy task manager. Its differentiation is emotional and kinesthetic, not functional depth.
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The complete reverse-engineering — what to copy, what to avoid, and exactly what to build instead.
- Full opportunity score across 8 dimensions
- The real problem & why customers pay
- Why it's winning — with evidence
- Complete business reverse-engineering
- Competitive advantages & moat analysis
- Weaknesses, risks & what to avoid
- Clone strategy — what to build instead
- Week-by-week MVP roadmap
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